mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-12 16:07:30 +00:00
efad6cf881
This SoC is used in the Raspberry Pi, for example. For more details, see: http://www.broadcom.com/products/BCM2835 http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf. Initial support is enough to boot to a serial console, execute a minimal set of U-Boot commands, download data over a serial port, and boot a Linux kernel. No storage or network drivers are implemented. GPIO driver originally by Vikram Narayanan <vikram186@gmail.com> with many fixes from myself. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
/*
|
|
* Copyright (C) 2012 Vikram Narayananan
|
|
* <vikram186@gmail.com>
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#ifndef _BCM2835_GPIO_H_
|
|
#define _BCM2835_GPIO_H_
|
|
|
|
#define BCM2835_GPIO_BASE 0x20200000
|
|
#define BCM2835_GPIO_COUNT 54
|
|
|
|
#define BCM2835_GPIO_FSEL_MASK 0x7
|
|
#define BCM2835_GPIO_INPUT 0x0
|
|
#define BCM2835_GPIO_OUTPUT 0x1
|
|
#define BCM2835_GPIO_ALT0 0x4
|
|
#define BCM2835_GPIO_ALT1 0x5
|
|
#define BCM2835_GPIO_ALT2 0x6
|
|
#define BCM2835_GPIO_ALT3 0x7
|
|
#define BCM2835_GPIO_ALT4 0x3
|
|
#define BCM2835_GPIO_ALT5 0x2
|
|
|
|
#define BCM2835_GPIO_COMMON_BANK(gpio) ((gpio < 32) ? 0 : 1)
|
|
#define BCM2835_GPIO_COMMON_SHIFT(gpio) (gpio & 0x1f)
|
|
|
|
#define BCM2835_GPIO_FSEL_BANK(gpio) (gpio / 10)
|
|
#define BCM2835_GPIO_FSEL_SHIFT(gpio) ((gpio % 10) * 3)
|
|
|
|
struct bcm2835_gpio_regs {
|
|
u32 gpfsel[6];
|
|
u32 reserved1;
|
|
u32 gpset[2];
|
|
u32 reserved2;
|
|
u32 gpclr[2];
|
|
u32 reserved3;
|
|
u32 gplev[2];
|
|
u32 reserved4;
|
|
u32 gpeds[2];
|
|
u32 reserved5;
|
|
u32 gpren[2];
|
|
u32 reserved6;
|
|
u32 gpfen[2];
|
|
u32 reserved7;
|
|
u32 gphen[2];
|
|
u32 reserved8;
|
|
u32 gplen[2];
|
|
u32 reserved9;
|
|
u32 gparen[2];
|
|
u32 reserved10;
|
|
u32 gppud;
|
|
u32 gppudclk[2];
|
|
};
|
|
|
|
#endif /* _BCM2835_GPIO_H_ */
|